23445505 has 8 divisors (see below), whose sum is σ = 28165032. Its totient is φ = 18736128.

The previous prime is 23445497. The next prime is 23445509. The reversal of 23445505 is 50554432.

It can be written as a sum of positive squares in 4 ways, for example, as 7091569 + 16353936 = 2663^2 + 4044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23445505 - 2³ = 23445497 is a prime.

It is a super-3 number, since 3×23445505³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23445509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4159 + ... + 8011.

It is an arithmetic number, because the mean of its divisors is an integer number (3520629).

It is a Proth number, since it is equal to 1431 ⋅ 2¹⁴ + 1 and 1431 < 2¹⁴.

Almost surely, 2^23445505 is an apocalyptic number.

It is an amenable number.

23445505 is a deficient number, since it is larger than the sum of its proper divisors (4719527).

23445505 is a wasteful number, since it uses less digits than its factorization.

23445505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 23445505 is about 4842.0558650226. The cubic root of 23445505 is about 286.2111380409.

Adding to 23445505 its reverse (50554432), we get a palindrome (73999937).

The spelling of 23445505 in words is "twenty-three million, four hundred forty-five thousand, five hundred five".